Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8064817 | Multimode recording and transmitting apparatus and its use in an interactive group response system | — | 2011-11-22 |
| 6302698 | Method and apparatus for on-line teaching and learning | — | 2001-10-16 |
| 5437555 | Remote teaching system | — | 1995-08-01 |
| 5263869 | Interactive group communication system | — | 1993-11-23 |